Handle a nonexistent repository with a 404 error.
Based on changeset 62ea868cafbfa3acb7e5dba6982ecb46a1637246 from
Vincent Wagelaar <vincent@ricardis.tudelft.nl>
in http://hannibal.lr-s.tudelft.nl/~vincent/fcgi
#!/usr/bin/env python
#
# An example CGI script to use hgweb, edit as necessary
import cgitb, os, sys
cgitb.enable()
# sys.path.insert(0, "/path/to/python/lib") # if not a system-wide install
from mercurial import hgweb
h = hgweb.hgweb("/path/to/repo", "repository name")
h.run()